Red Hat Linux Netscape HTML Buffer Overflow
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CIAC INFORMATION BULLETIN
L-022: Red Hat Linux Netscape HTML Buffer Overflow
November 28, 2000 17:00 GMT
PROBLEM: The HTML parsing code of Netscape is flawed. A malicious remote
website can execute a buffer overflow causing arbitrary code to run.
PLATFORM:
Red Hat Linux 6.0
i386, alpha, sparc
Red Hat Linux 6.1
i386, alpha, sparc
Red Hat Linux 6.2
i386, alpha, sparc
Red Hat Linux 7.0
i386, alpha
DAMAGE: Through the execution of arbitrary code a malicious remote
website could gain root access.
SOLUTION: Update Netscape, as per Red Hat instructions.
VULNERABILITY The risk is HIGH. The vulnerability has been publicly posted.
ASSESSMENT:
[****** Begin Red Hat Advisory ******]
---------------------------------------------------------------------
Red Hat, Inc. Security Advisory
Synopsis: New Netscape packages available
Advisory ID: RHSA-2000:109-05
Issue date: 2000-11-17
Updated on: 2000-11-27
Product: Red Hat Linux
Keywords: netscape HTML buffer overflow
Cross references: N/A
---------------------------------------------------------------------
1. Topic:
New Netscape packages are available that fix a buffer overflow
in parsing HTML.
It is recommended that all Netscape users update to the fixed
packages.
2000-11-27: Added packages for Red Hat Linux 7 for Alpha
2. Relevant releases/architectures:
Red Hat Linux 6.0 - i386, alpha, sparc
Red Hat Linux 6.1 - i386, alpha, sparc
Red Hat Linux 6.2 - i386, alpha, sparc
Red Hat Linux 7.0 - i386, alpha
3. Problem description:
A buffer overflow exists in Netscape's HTML parsing code. By
using specially designed code, a remote website could cause
arbitrary code to be run on the local machine.
4. Solution:
For each RPM for your particular architecture, run:
rpm -Fvh [filename]
where filename is the name of the RPM.
5. Bug IDs fixed (http://bugzilla.redhat.com/bugzilla for more info):
20415 - Netscape segfault - cured in 4.76
20462 - Netscape 4.75 buffer overflow
6. RPMs required:
Red Hat Linux 6.0:
i386:
ftp://updates.redhat.com/6.0/i386/netscape-common-4.76-0.6.2.i386.rpm
ftp://updates.redhat.com/6.0/i386/netscape-communicator-4.76-0.6.2.i386.rpm
ftp://updates.redhat.com/6.0/i386/netscape-navigator-4.76-0.6.2.i386.rpm
sources:
ftp://updates.redhat.com/6.0/SRPMS/netscape-4.76-0.6.2.src.rpm
Red Hat Linux 6.1:
i386:
ftp://updates.redhat.com/6.1/i386/netscape-common-4.76-0.6.2.i386.rpm
ftp://updates.redhat.com/6.1/i386/netscape-communicator-4.76-0.6.2.i386.rpm
ftp://updates.redhat.com/6.1/i386/netscape-navigator-4.76-0.6.2.i386.rpm
sources:
ftp://updates.redhat.com/6.1/SRPMS/netscape-4.76-0.6.2.src.rpm
Red Hat Linux 6.2:
alpha:
ftp://updates.redhat.com/6.2/alpha/netscape-common-4.76-0.6.2.alpha.rpm
ftp://updates.redhat.com/6.2/alpha/netscape-communicator-4.76-0.6.2.alpha.rpm
ftp://updates.redhat.com/6.2/alpha/netscape-navigator-4.76-0.6.2.alpha.rpm
i386:
ftp://updates.redhat.com/6.2/i386/netscape-common-4.76-0.6.2.i386.rpm
ftp://updates.redhat.com/6.2/i386/netscape-communicator-4.76-0.6.2.i386.rpm
ftp://updates.redhat.com/6.2/i386/netscape-navigator-4.76-0.6.2.i386.rpm
sources:
ftp://updates.redhat.com/6.2/SRPMS/netscape-alpha-4.76-0.6.2.src.rpm
ftp://updates.redhat.com/6.2/SRPMS/netscape-4.76-0.6.2.src.rpm
Red Hat Linux 7.0:
alpha:
ftp://updates.redhat.com/7.0/alpha/netscape-common-4.76-1.alpha.rpm
ftp://updates.redhat.com/7.0/alpha/netscape-communicator-4.76-1.alpha.rpm
ftp://updates.redhat.com/7.0/alpha/netscape-navigator-4.76-1.alpha.rpm
i386:
ftp://updates.redhat.com/7.0/i386/netscape-common-4.76-1.i386.rpm
ftp://updates.redhat.com/7.0/i386/netscape-communicator-4.76-1.i386.rpm
ftp://updates.redhat.com/7.0/i386/netscape-navigator-4.76-1.i386.rpm
sources:
ftp://updates.redhat.com/7.0/SRPMS/netscape-alpha-4.76-1.src.rpm
ftp://updates.redhat.com/7.0/SRPMS/netscape-4.76-1.src.rpm
7. Verification:
MD5 sum Package Name
--------------------------------------------------------------------------
70e2a3b0e97bd39cf5041ed4abacda98 6.0/SRPMS/netscape-4.76-0.6.2.src.rpm
b4a875d94e0947b16b9a973d23f6222b 6.0/i386/netscape-common-4.76-0.6.2.i386.rpm
fcde6218d7de0e9e009892c57e7f88ca 6.0/i386/netscape-communicator-4.76-0.6.2.i386.rpm
670b08cbad1097f4ca923071c202b5dd 6.0/i386/netscape-navigator-4.76-0.6.2.i386.rpm
70e2a3b0e97bd39cf5041ed4abacda98 6.1/SRPMS/netscape-4.76-0.6.2.src.rpm
b4a875d94e0947b16b9a973d23f6222b 6.1/i386/netscape-common-4.76-0.6.2.i386.rpm
fcde6218d7de0e9e009892c57e7f88ca 6.1/i386/netscape-communicator-4.76-0.6.2.i386.rpm
670b08cbad1097f4ca923071c202b5dd 6.1/i386/netscape-navigator-4.76-0.6.2.i386.rpm
70e2a3b0e97bd39cf5041ed4abacda98 6.2/SRPMS/netscape-4.76-0.6.2.src.rpm
924dec1cde5eba83655c1aa1f93bad39 6.2/SRPMS/netscape-alpha-4.76-0.6.2.src.rpm
acbb0bcbca33eb41e396a9c7013e2d3d 6.2/alpha/netscape-common-4.76-0.6.2.alpha.rpm
5709be8e1656a2eff9fafe719f5528d2
6.2/alpha/netscape-communicator-4.76-0.6.2.alpha.rpm
9aa6f256592c3f96ee60c57b879618b2 6.2/alpha/netscape-navigator-4.76-0.6.2.alpha.rpm
b4a875d94e0947b16b9a973d23f6222b 6.2/i386/netscape-common-4.76-0.6.2.i386.rpm
fcde6218d7de0e9e009892c57e7f88ca 6.2/i386/netscape-communicator-4.76-0.6.2.i386.rpm
670b08cbad1097f4ca923071c202b5dd 6.2/i386/netscape-navigator-4.76-0.6.2.i386.rpm
81e1c3e9673ab1e2b498cf3fdaeabcc5 7.0/SRPMS/netscape-4.76-1.src.rpm
7faa76eb6405f45aeb6c41380b833967 7.0/SRPMS/netscape-alpha-4.76-1.src.rpm
199832fec88401961e33203adf3a27c2 7.0/alpha/netscape-common-4.76-1.alpha.rpm
29848ea9545c21d3bb0d8318265fd918 7.0/alpha/netscape-communicator-4.76-1.alpha.rpm
1f27bf46ccf8c7d0bfa7106240cc8174 7.0/alpha/netscape-navigator-4.76-1.alpha.rpm
3bb98e22f094236211955579c7ce49ad 7.0/i386/netscape-common-4.76-1.i386.rpm
fc03263dbbbe7f8f1031200d9a8e2022 7.0/i386/netscape-communicator-4.76-1.i386.rpm
3a12fb2d8d0187c7d3684b2a7cf4a9fc 7.0/i386/netscape-navigator-4.76-1.i386.rpm
These packages are GPG signed by Red Hat, Inc. for security. Our key
is available at:
http://www.redhat.com/corp/contact.html
You can verify each package with the following command:
rpm --checksig
If you only wish to verify that each package has not been corrupted or
tampered with, examine only the md5sum with the following command:
rpm --checksig --nogpg
8. References:
ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-00%3A66.netscape.asc
Copyright(c) 2000 Red Hat, Inc.
[****** End Red Hat Advisory ******]
CIAC wishes to acknowledge the contributions of Red Hat , Inc. for the
information contained in this bulletin.
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can be contacted at:
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(same machine -- either one will work)
Anonymous FTP: ftp.ciac.org
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UCRL-MI-119788
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